Update data service to track the state of dataTransferStatus.
Make the Ajax Handler check dataTransferState for determining when to send toastr message.
update clear function to remove useless check against layerId that would cause the function to error, if used.
Set timeline to check dataTransferState instead of the value of a snapshot count badge. Take delete dataset out, it is now in the data service.
update pubsub channel docs
put control of deleting from data stroage back in the hands of timeline. This will need a bigger refactor to put it in with data services, see #120
Merge pull request #116 from ozone-development/bug/54/query-stop-toastr-notification

Bug/54/query stop toastr notification